Three more Sydney parks have been cordoned off or closed temporarily after tests revealed mulch has been contaminated with asbestos.
City of Sydney council said it became aware its suppliers may have received contaminated mulch.
Five parks in the council area were tested, including Victoria Park at Broadway, Belmore Park near Central Station, Harmony Park and Prince Alfred Park in Surry Hills and Pope Paul VI Reserve in Glebe.
Friable asbestos was found in mulch at Harmony Park and would be temporarily closed while the site was cleaned, the council said in a statement.
Tests also found bonded asbestos, considered low risk to public health, in mulch at Victoria Park and Belmore Park.
Affected areas will be cordoned off as crews get to work cleaning it up.
A spokesperson said the recycled mulch product was used in garden beds and under trees, but not in playgrounds.
Suppliers of recycled mulch have been placed on notice after fragments of asbestos were found at multiple NSW government projects including a park, train stations and a school, while a hospital is also being assessed.
More than 100 sites across Sydney have been tested by the state's Environmental Protection Authority, with at least 13 returning a positive result for bonded asbestos.